IL300-DEFG-X009T

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Optoisolators provide a declared electrical separation between input and output. This enable them to act as a buffer within electronic systems, preventing high voltage transients or malfunctions from reaching sensitive components. IL300-DEFG-X009T is an optocoupler which utilizes a transistor-photovoltaic output, allowing for current transmission with a total electrical isolation.

The main application of the IL300-DEFG-X009T lies within industrial automation, telecommunication, and control systems. It acts between low voltage (LV) and high voltage (HV) circuits. Generally, LV power supplies are used to power process industrial automation, and HV are used as main power supplies to control and operate various HV circuits. Optocouplers like the IL300-DEFG-X009T prevent interference between LV circuits and HV circuits by transparently transferring electrical signals between the two without compromising the electrical insulation.

The IL300-DEFG-X009T is a transistor-photovoltaic output optocoupler, within which it uses an infrared light emitter (IRED) to optically link an input LED and an output phototransistor. This optoisolator has a built-in high voltage breakdown protection diode connected across the output phototransistor, ensuring safe operation within a range of up to 6000 Vrms. In addition, its high common mode rejection and desirable rise/fall time permits it to manipulate signals precisely with low distortion even within noisy applications.

The working principle of the IL300-DEFG-X009T is illustrated below by the following diagram:

When the input LED is triggered by an external electrical signal, it emits an infrared light which is then detected by the output phototransistor. This phototransistor amplifies the input signal and produces an output voltage across its collector-emitter nodes. When the input LED is not triggered, the output phototransistor is inactive due to lack of light. Additional components within the optocoupler ensures that the output voltage level is proportional to the input signal. This allows for precise transmission of electrical signals between LV and HV circuits with complete electrical insulation.

The transistor-photovoltaic output optocouplers are employed in a wide range of industrial automation and control applications due to its ability to provide declared electrical insulation. The IL300-DEFG-X009T is a highly reliable optocoupler which is suitable for noisy applications and is designed to ensure a safe voltage breakdown operation.

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